Made unix domain sockets work on Linux.
Made the fix apply to all unices and added a unit test.
Mark leftJustify, rightJustify and center as pure
Merge pull request #1496 from jerro/unix-domain-sockets

Fixed std.socket.UnixAddress
Merge pull request #1513 from tom-tan/pure-string-justify

Mark leftJustify, rightJustify and center as pure
Mark std.string.inPattern as @safe and pure
Mark std.string.countchars as @safe and pure
Merge pull request #1518 from tom-tan/safe-pure-string-inPattern

Mark std.string.inPattern as @safe and pure
Merge pull request #1519 from tom-tan/safe-pure-string-countchars

Mark std.string.countchars as @safe and pure